Lock



Patented Dec. 9, 1924.

PATENT OFFICE.

ROLAND MOORE MAUNDER, OF PALMERSTON NOR-TH, ZEALAND.

LOCK.

Application filed July 11, 1922. Serial No. 574,131.

To aZZ '10 7mm it only canoe m7 Be it known that I, Renae-'1) MOORE MAUNDnn, a subject of the King of Great Britain and Ireland, residing in Palmerston North, New Zealand, have invented a new and useful Improvement in Locks; and I do hereby declare the following to be a full, clear, and exact description of the same.

This invention relates'to locks of the pin tumbler-type in which a barrel containing the cylinder projects from a flange adapted to lie against the face of the door, such barrel entering a hole in the door.

The chief object of this invention is to so construct the lock that it cannot be turned in the hole provided for it in the door.

In carrying out my invention I cast the portion in which the tumbler pins are lo cated in the form of a barrel preferably corresponding in diameter with the barrel containing the revolving cylinder. The two barrels are joined together by means of a web at the point where their circumferences are nearest each other, or are joined by their circumferences overlapping.

The additional barrel is tapped toreceive a screw or bolt or the barrel may be extended forward and be threaded to receive a. nut.

In order to fit such a lock to a door it is necessary to bore two holes in the Woodwork such holes being bored in relation to each other corresponding to the relation of the two barrels to each other, and in the case of them being joined by a web, the two holes are joined by means of a slot to receive the web.

The lock is then placed in position by inserting the barrels in the holes and securing it by means of a single bolt or screw from the rear of the door. By this arrangement it is impossible to turn the lock and where the second barrel is formed into a threaded extension to receive a nut hearing against a plate on the inner side of the door, it is practically impossible to withdraw the lock.

The invention will be illustrated in the accompanying drawings, wherein Figure 1, is a cross section through a door showing the lock in position.

Figure 2, is an end view of the lock in position.

Figure 3, shows how the hole in the door is formed.

Figure 4, and

Figure 5, are similar views to Figure l but showing a slightly different shaped lock in each case.

Figure 6, is a side elevation of a modified form of lock, and.

Figure 7, is an end elevation thereof.

Figure 8, is aplan,

Figure 9, is an end View, and

Figure 10, is a side view of a further modification.

Figure 11, is a View of another look.

Referring first to Figures 1 to 3, the body of the lock is formed with the usual barrel 1 projecting from the usual fiange 2 while another barrel 3 corresponding in diameter to the main barrel 1 is arranged immediately above such barrel and takes the place of the usual pin carrier, the tumbler pins (dotted lines) being arranged within the barrel 3. The circumferences of the barrels overlap each other at 4 as shown in Figure 2, and are integral with each other at that point.

The barrel 3, as formed in Figures 1 and 2, is of the same length as the barrel 1, the end thereof having a tapped hole 25 above the tumbler pins to receive a screw 5 which is inserted from the inner side of the door in a similar manner to the screws which are threaded into the lugs which usually project from the barrel of locks of this kind. The hole 25 is fairly long so as not to require any shortening of the screw 5 when used on thinner doors. When fitting the lock two holes 6 and 7 of a diameter corresponding to the diameter of the barrels are bored in the door, the circumference of one slightly overlapping the circumference of the other as indicated in Figure 3, which thereby leaves a ap 8 between the two holes. The upper hole 6 for the barrel 3 is preferably not bored right through the door, but a portion 9 is left through which a smaller hole is provided for the screw 5.

The lock is then placed in position by inserting the barrels 1 and 3 into the holes ing is prevented by reason of theposition of the twvobarrels. lt is ,obvious that by such an arrangement the two holes'may be bored with the same instrument and no extra fitting is required.

In Figure 4, the barrel. 3;;isextended beyond the length of the barrel 1 thereby providingaa longer. thread-for theescrew 5 which may then be in the centre of theibarrelzi3. :In I this casetthehole 16' is: bored right through the door and a plate 11 coversrthe opening formed by the twoiholes.

In Figure 5,-'the-endwof thebarrelxlgis formed with an antegral :-.bolt ,or staid $12 threaded to receive a nut 13. When thezlock is made in this form and; the; bolt 'ffilEUClBiOf suificient strength and g a .t stout; plate; sujch as the-rplate 11 in wEigure 4,'-,e1nployed r :lll =.will be practically impossibleto wvithdrzrwjthe look from: the door by! inserting am instrument between the ,dooraand the flange In Figures 6 to 8 the barrel Bdsriormed more. in theishape OfifiLiOlQSSZ-btll], the; diameter' of the, ridges; 1,4 correspondi togthe {diameterof the; barrel i 1. The; ridgese la extend forwardly eas 1 indicated Lin i Fdgt-UBS :7 and 8, and have 9' an opening beyond; the? {flange likeportionr 16 carrying the tumbler.- pinsj'the end of the extension :beyond- :the opening 15s .l avin-gwa tapped hole toreceive thee bolt oriscrew .118.

s In Figures 19; and l0xthe1 barrel '1 containingxthe cylinder is arranged =inflthe centre 01; 5a flange 1 19 and upon either side i thereof integral studs 20 are formed and connected with itl-IB-xbfimfl-iby means :of webs: 21. The ends of: the :studs are screw thre aided: to re.- ceive; nuts, and pass-through 1a aback :=plate inathe ordinary way.

fln' 'th iswcase it wouldg be; necessary to bore three F'lMDlQS, cone futO receive Ethel imain ':-barrel and a two smaller -;o.nes itor -.the bolts, -slots being out between the larger whole and {the smalleriones to receiver the \websr21. -Simr larly, if-desired,-wthe dOCku-SllOlWll int-Figure main iibarrel and 'gthe other to receive the smaller barrel, a slot being out between the tw)o holes to receive the web (see Figure 11 That I claim is :ljma cylinder iloclrcomprising -;in combination a flange aldapted to Iliet against the outer face of the door, a main cylinder 7 plug-contalnlng barrehan add t onal tumbler pin containing "barrel lying parallel ,with and of a different length than that of said main barrel, said barrels projecting r-from onetiacezof said flange, a web joining said barrels where their circumferences are nearest (one another, and i faseeming: nsane-ex end ng? t rene h nn ace of the! K109 ?ii lnclvc n lec fi t esa d re ditional tumbler ,pin containing barrel wherebytsai be r l:-Wi11-be ret i d insa d d oraagains r ta eni 2. "In-4a cylinderi ock: empriei g incomi nati iif angeead pte to; li againstjth outer face of the door, a main cylinder plug-co t ning; barreLaan additio a mumbler zpin containing;barre1,;sa' lbarrels -pm- .i ctin-ge rcnlee e faceotsa-idwfiangc, aaweb joining esaid :ibarrels ql fhfil e their 1 circumferences are near s ere: er, [read i tening means extending thr h {the inner face-of thedeo an on-nected'torthe free d c saidiadditi nal tumb el iiPi1 -c nta n'g bar elsebetantia ly iasean $0 the pu pose-specified. v

ey nder lock r. c mp i ng a 5 ang w h l e ega st-thw a e otthedoer, a inainebarrel proj ectin-g from; said flange, :an addi iona f- 'l' arranged ziparvllel with the main barrel and; integrally, joined thereo, said 'Ld d i HQ :barre r x eni -ng a Werdly t0 aQrm tl e -fa en ng mea and threaded alto a-reeei-ve a 1111111, substantially as e c ib d- "A. cy ind r dock mprising flang i. 1E geid-qparallel with s 3 eine lztliereid a'i i l lt t' fl l ll icb rr l a extensio of reduced diameter r nut, substantially asmdescribed.

:Inqtestimonyawhereof, 1' have signedainy name to this specification in the; presenceot two subscribing witnesses.

I ROLANDiMQQllEiMAUNDER. at/V-itnesses:

'HIGGS,

l DQRAflMU'IR.

ireajded :to {receive a 

